使用mingw交叉编译windows的opengl应用程序

在Windows世界中,要将某些内容链接到DLL,您需要一个“导入库”。您可以将其视为带有存根函数的静态lib,存根函数公开DLL的符号。你需要寻找liblut32.a。

如果你找不到,甚至可能有一个VisualC++来导入导入库转换工具在互联网上的某个地方…(我已经有一段时间不需要这样的东西了,所以也许我只是梦见了那部分。)

实际上,您甚至不需要GLUT,它已经存在了,只需要链接libopengl32.a,它将可执行文件链接到系统上的本机opengl32.dll。

typedef struct RENDER_SURFACE {
    void (*redraw)(struct RENDER_SURFACE*);
    HWND hWnd;
    HINSTANCE hInstance;
    HDC hdc;
    HGLRC hrc;
    int width;
    int height;
    int pix_fmt;
    float light_position[4];
    float light_ambient[4];
    float light_diffuse[4];
    float light_specular[4];
    float light_shininess;
} RENDER_SURFACE;

static LRESULT AppProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
    RENDER_SURFACE* rs = (RENDER_SURFACE*)GetWindowLongPtr(hWnd, GWLP_USERDATA);
    if (uMsg == WM_CREATE)
    {
        RECT rc;
        PIXELFORMATDESCRIPTOR pfd;
        rs = (RENDER_SURFACE*)((LPCREATESTRUCT)lParam)->lpCreateParams;
        SetWindowLongPtr(hWnd, GWLP_USERDATA, (LONG_PTR)rs);
        rs->hWnd = hWnd;
        rs->hdc = GetDC(hWnd);
        GetClientRect(hWnd, &rc);
        rs->width = rc.right-rc.left;
        rs->height = rc.bottom-rc.top;
        memset(&pfd, 0, sizeof(pfd));
        pfd.nSize = sizeof(pfd);
        pfd.nVersion = 1;
        pfd.dwFlags = PFD_DRAW_TO_WINDOW | PFD_DOUBLEBUFFER | PFD_SUPPORT_OPENGL;
        pfd.cColorBits = 24;
        pfd.cDepthBits = 32;
        rs->pix_fmt = ChoosePixelFormat(rs->hdc, &pfd); 
        if (!rs->pix_fmt)
        {
            MessageBox(hWnd, "ChoosePixelFormat FAILED!", "Fatal Error", MB_OK | MB_ICONSTOP);
            DestroyWindow(hWnd);
            return -1;
        }
        SetPixelFormat(rs->hdc, rs->pix_fmt, &pfd);
        rs->hrc = wglCreateContext(rs->hdc);
        wglMakeCurrent(rs->hdc, rs->hrc);
        /* SwapBuffers(rs->hdc); */
        return 0;
    }
    else if (uMsg == WM_PAINT)
    {
        /* other stuffs */
    }
    return DefWindowProc(hWnd, uMsg, wParam, lParam);
}